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    <script>
        // 圆周率
        console.log(Math.PI);
        // 绝对值
        console.log(Math.abs(-66));//66
        // 最大值和最小值
        console.log(Math.max(2,5.5,848,656));
        console.log(Math.min(5,-6555,54,5454));
        //皿运算Math.pow(x,y)   求x的y次方
        console.log(Math.pow(2,3));
        // 随机数（从0-1之间随机小数）
        console.log(Math.random()*100);
    </script>
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